作物研究2026，Vol.40Issue(2)：122-129,8.
早稻两系不育系播始历期和叶片数的稳定性分析
Stability Analysis of Sowing-Heading Duration and Leaf Number in Two-Line Sterile Lines of Early Rice
摘要
Abstract
To investigate the growth period stability and utilization value of 10 long-grain high-quality early two-line rice sterile lines derived from Yuan 511S,these sterile lines were sown in 10 batches in Changsha,Hunan in 2024.The sowing-heading duration and total leaf number of the sterile lines under different sowing dates were measured.The stability of sowing-heading duration and leaf numbers under various sowing dates was analyzed using the coefficient of variation and the AMMI model.The results showed that as the sowing date was delayed,the sowing-heading duration of the sterile lines gradually shortened,while the leaf numbers initially decreased and then increased.The coefficient of variation(CV)for sowing-heading duration among the sterile lines under different sowing dates ranged from 5.84%to 11.97%,and that for leaf numbers ranged from 2.09%to 3.18%.Based on the Di values calculated from the genotype-environment interaction effects of sowing-heading duration using the AMMI model and the coefficient of variation,the tested sterile lines were clustered into three categories,and the production application characteristics of each type of sterile lines were discussed.The findings can serve as a reference for sowing date arrangements in hybrid seed production of newly selected sterile lines and provide a basis for further improvement of growth period-stable sterile lines.关键词
早稻/两用不育系/生育期/叶片数/稳定性分析Key words
early rice/two-line male sterile line/growth period/leaf number/stability analysis分类
农业科技引用本文复制引用
阳文龙,李龙,朱子亮,罗丽华,肖应辉..早稻两系不育系播始历期和叶片数的稳定性分析[J].作物研究,2026,40(2):122-129,8.基金项目
湖南农业大学校级科学研究项目(25KJ002,25KJ079). （25KJ002,25KJ079）
